import type { MiddlewareHandler } from "hono";
/**
 * Blocks the two shapes a cross-origin page can use to reach a mutating route
 * without a CORS preflight: a body sent under a form/text content type, and a
 * bodyless request. A request with `Sec-Fetch-Site: cross-site` is refused with
 * 403; a body under any other content type is refused with 415.
 */
export declare function mutatingRequestGuard(): MiddlewareHandler;
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